Blast-furnace.



No. 695,886. Patented Mar. l8, I902.

C. l. RADEB.

BLAST FURNACE.

(Application filed May 22, 1901.)

' (No Mod m 3 Sheets-Sheet I.

WITNESSES I mvzm-on n'i "cams PETERS co. PHOTOLITHO wAsHINcTON, D. c.

No. 695,886. Patented Mar. I8, I902. C. l. BAUER.

BLAST FURNACE.

(Application filed May 22, 1901.)

(No Model.) 3 Sheets-$haet 2.

WITNESSES INVENTOR WWW/m? /4444 JKW Patented Mar. l8, I902. I. BAUER. I

BLAST FURNACE.

(Application flied M31122, 1901.)

3 Sheets-Sheet 3.

(No Model.)

INVEN'I'OR wrrnsssss 01%. Mazkn "ms worms Fcrzns co. maro-uma.WASHING'ION. u e.

Nrrn rates arnnr OFFICE.

CHARLES I. RADER, OF YOUNGSTOWN, OHIO, ASSIGNOR OF ONE-HALF TO WILLIAMH. IIASSINGER.

BLAST-FURNACE.

SPECIFICATION forming part of Letters Patent No. 695,886, dated March18, 1902. Application filed May 22, 1901. Serial No. 61,386. (No model.)

1"!) all whom it may concern:

Be it known that 1, CHARLES I. RADER, of Youngstown, Mahoning county,Ohio, have invented a new and useful Blast-Furnace, of

which the following is a full, clear, and exact description,referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is a partial vertical section of a oblast-furnace constructed in accordance with my invention. Fig. 2 is aside elevation of the same, partly broken away and Fig. 3 is ahorizontal section, the upper half of the figu re being on the line X X,the lower left-hand [5 portion on the line Y Y, and the lower righthandportion on the line Z Z of Fig. 2

My invention relates to the construction of blast-furnaces, andparticularly to the bosh portions thereof; and it is designed to preventthe formation of corrugations or ridges in the hosh-lining, such asresult from the use of the horizontal rows of cooling-plates now used.It is further designed to reduce the expense of constructing the boshportion of the furnace, to prevent the forming of openings and theforcing out of gases at the juncture of the jacket and the mantle, wherea bosh-jacket is used, and to improve the action of the furnace andprolong its life.

In the drawings, 2 represents the bosh-lining, and 3 the bosh-jacket, ofa blast-furnace, having the usual twyers 4 arranged around the crucible.

5 represents the supporting-columns for the furnace, 6 the annularmantle-plate, and 7 the cylindrical shell of the furnace.

In order to prevent buckling of the boshjacket at the point where itjoins the mantle, which causes openings through which the gases escape,I provide vertically-extending water-cooled plates S,which extend fromabove the mantle-plate to a level below it and are provided with outerlateral flanges 9, which rest on angles 10, resting upon or secured tothe mantle-plate. These plates 8 may be water-cooled in any desirablemanner, and I have shown them as cast about serpentine pipes 11, bothends of which project downwardly through a jog or offset portion 12 inthe bosh-jacket. I

A small space for rivet-heads is shown between the outer face of thevertical plate 8 and the inner face of the cylindrical portion 13 of thebosh-jacket, which space is preferably filled with grouting. The offset12 is designed to protect this plate, so that the blast or gases, whicharise with more or less velocity, are prevented from impact with theunder side of the plate, which is set above the shelf or offset portion.

I have shown the water connections for the plates 8 as connected inpairs. Thus the supply-pipe 14 leads from the annular supplypipe 15 andis connected to the serpentine pipe of one of the plates, while theoutletpipe 16 of this plate is connected with the inlet for the nextplate. The outlet for this next plate of the pair is connected to a U-shaped pipe 17, which discharges into the annular trough 18, surroundingthe bosh.

The jacket 3 is cooled by means of a circular spray-pipe 19, whichsurrounds it beneath the offset and discharges the water directly uponthe jacket. This spray-pipe may be fed from the supply-pipe 15 throughpipes 20. The lower end of the jacket is provided with a catch-trough21, from which the water passes through overflow 22 (shown in Fig. 2)and through waste-pipe 23 to the sewer or well.

Between the lower part of the bosh-jacket and the twyer-coolers areplaced the horizontal coolingbosh-plates 24:. These plates are locatedin the wall and may be fed from the supply-pipe through feed-pipes 25. Ihave shown these plates as connected by the short pipes 26 in sets ofthree, the third plate having the waste-pipe 27, which is curved over todischarge into the trough 21. This row of plates is placed as closelyabove the twyer-eoolers and below the lower end of the bosh-j acket aswill allow their ready removal and prevent the impingement of the blastupon the bosh-jacket, and consequently prolong its life. They also actas a support for 5 the brick lining or other refractory wall which maybe formed or produced in the melting zone and prevent it from slidinginto the hearth or crucible.

The twyer spray-pipes 28 may be fed from the supply-pipe 15 through thefeed-pipes 29.

In order to prevent recesses being formed in the lining above the plates8, I provide above the mantle one or more horizontal rows ofcooling-plates 30. The inner ends of these plates 30 are preferablyflush with the vertical plane of the inner faces of the plates 8, sothat'the cooling action holds the lining from recessin g back of theplane of these plates.

In Fig. 2 I have shown the water-supply connections for two rows of suchplates, 31 being the feed-pipe leading from the supply and discharginginto receptacles 32,conn'ected to the inlet of one set of plates,through which the water is fed and from which it passes through pipe 33to a receptacle 34, feeding a set of plates in the lower row and fromwhich the waste is led through pipe 35, which discharges into the trough18.

The advantages of my invention result from the use of the verticallyextending cooling-plates at the juncture of thebosh and mantle incombination with the water-cooled bosh-jacket, since the escape of thegases is prevented and the jacket is prevented from buckling. Thesevertical water-cooled plates thoroughly protect this level and areespecially important with the low boshes now being universally adopted.The lowest parts of these plates are above the melting zone and are notliable to burn or melt while Water is supplied thereto. If from anycause any section of these plates should become useless, the spray onthe jacket will prevent serious trouble. The shelf or offset portion ofthe bosh-jacket assists in protecting this plate and places it outsidethe cutting action of the gases.

The use of the sprayed bosh-jacket with the row of cooling-platesbetween it and the twyers prevents ridges or corrugations forming in thebosh, the cooling-plates preventing the blast from injuring-the jacket,and also supporting the lining.

The Water-cooled plates above the mantle are important in preventinginjury to the vertical mantle-plates, and they prevent recesses formingabove these plates and insure a more even flow of the stock.

With my construction of bosh the stock is less liable to bridge, theWorking of the furnaee'is more regular, and the cost of the bosh is muchless than those of the ordinary construction.

, Many changes may be made in the form and arrangement of the jacket,the cooling-plates, and the cooling connections without departing fromm'yinvention as defined in the claims.

1. A blast-furnace having a mantle, verti cal water-cooled plates in itswalls at the level of the mantle, a jacket surrounding the plates, meansfor cooling the plates, a bosh-jacket surrounding the furnace-bosh, andmeans for cooling the said bosh-jacket; substantially as described.

2. A blast-furnace having a mantle, vertical plates embedded in themasonry wall of the furnace at the level of the mantle, and containingcooling-passages, the f urnace-bosh having a surrounding jacket, andmeans for cooling said plates and bosh-jacket; substantially asdescribed.

3. A blast-furnace having a mantle, vertical plates at the level of themantle, means for water-cooling said plates, a jacket surrounding thefurnace-bosh, means for cooling said bosh-jacket, and an ofiset jacketportion extending from the bosh-jacket around the water-cooledmantle-plates 5 substantially as described.

4. A blast-furnace having a mantle, vertical plates at the mantle level,and having outwardly-projecting lips or flanges, supports for said lips,and means for Water-cooling the plates; substantially as described.

5. A blast-furnace having a bosh-jacket, means for water-cooling thesame, twyercoolers below the bosh-jacket, a row of horizontal platesbetween the twyer-coolers and the lower part of the bosh-jacket, saidplates extending inwardly beyond the jacket and acting as shelves forthe Wall or lining and means for water-coolin g said horizontal plate;substantially as described.

6. A blast-furnace having a mantle, vertically-extending plates embeddedin the masonry wall at the mantle level, means for Water-cooling saidplates, and a horizontal row of cooling-plates embedded in thefurnace-walls above the level of the mantle; substantially as described.

7. A blast-furnace having a mantle, vertically-extending plates at thelevel of the mantle, means for water-cooling said plates, and ahorizontal row of cooling-plates embedded in the furnace-wall above themantle, said upper plates extending inwardly to the vertical plane ofthe plates at the mantle level; substantially as described.

8. A blast-furnace having a mantle, vertically-extending plates at themantle level, means for water-cooling the plates, a boshjacket, meansfor water-cooling said jacket, twyer-coolers below the bosh-jacket, arow of horizontal plates embedded in the bosh between the lower end ofthe jacket and the twyer coolers and acting as shelves, and means forcooling said horizontal plates; substantially as described.

In testimony whereof I have hereunto set my hand.

CHAS. I. RADER.

W'itnesses:

H. M. CORWIN, O. P. BYRNEs.

